No. 3.— CAMAROPHORELLA, A MISSISSIPPIAxX MERI- 
STELLOID BRACHIOPOD. 
BY JESSE E. HYDE. 
Introduction. 
The genus Camarophorella was erected by Hall and Clarke ('94, 
p. 838) to accommodate a species ^A'hich they considered as having 
internal characters normal for Camarophoria. The form and out- 
line, however, were so different from those of the known species of 
this genus that they deemed it worthy of subgeneric rank. It was 
based on the species Pentamerus Jenticidaris White and Whitfield, 
from the Burlington beds at Burlington, Iowa, since described by 
Weller ('01, p. 162) as occurring in the Kinderhook at that locality 
Up to the present, no other form has been known that could be asso- 
ciated with it. 
The year following that in which the genus was first described and 
named, the description was repeated in practically the same words 
with slight additions (Hall and Clarke, '95, p. 215). It is unnecessary 
to quote both and as the latter is a little the fuller, it is here given : 
"The Camarophorella {Peniamerus) lenficularis, White and Whit- 
field, from the Yellow sandstones beneath the Burlington limestone, 
at Burlington, Iowa, is a shell widely different from all the foregoing 
[species of Camarophoria] in external features. The valves are bi- 
convex and their outline subcircular; it has no fold and sinus and 
no plications, the surface being smooth and regularly arched. To 
associate it generically with the plicate trihedral Camarophorias 
recjuires an effort of the imagination. At the same time its internal 
characters are normal for Camarophoria, except that the broad, 
spatuliform spondylium rests upon the valve for most of its length, 
the median septum penetrating it and projecting above it intp the 
interior cavity of the shell. It is proposed to signalize these differences, 
and thus to render the association constituting Camarophoria the 
more homogeneous, by giving this species the subgeneric designation, 
Camarophorella." 
This supposed relationship to Camarophoria would give the genus 
a position in the family Pentameridae in which no brachial support is 
known except the crura. 
In an extensive collection made by the writer and his father, Mr. 
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